Daniel hats and william free



@time new stent @ffice- Letters Patent 1Y0. 'i4,821, dated February 25, 1868.

'IMPROVEMENT IN PIRE-secure LADDER.

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'IO ALL WIIOM lIT MAY CONGERN: y

Be it known that we, DANIEL I-IAYS'andWILLIAM FRE, of San Francisco, county of San Francisco, State of California, have invented nii Improved Fire-Escape Ladder; and we do hereby declare the following description and accompanying drawings are-suilicient to ena-ble ariy person skilled in `the art or science towhich it most' nearly appertains to make and use our said invention or 'improvement without further invention or experiment. The natu'reiof oui` invention is to provide a ready and convenient means of sending upV or elevating ladders to a'greater or less height against a burning building, so that the inmates may escape or the fire oe subdued.

` To do this'a common carriage may be employed, with a rest or holder upon the back part, on which aseries of ladders are placed when not extended. At the front end ot' the carriage I place a turn-table, made much in4 the usual way. Trunnionsaire attached to each side of the ladder, operating in upright pillow-blocks placed upo'n the turn-table. Baclgof the trunnions and pillow-blocksis placed a hand-roll, resting in upright standn-rds, with a cord or chain passing around it, which extends over a pulley in the upper end of the main ladder, both ends of the rope being fastened to a clip which is attached to a second ladder, which slides along the first or main ladder by using the hand-roller. Extending from the turn-table, placed bucle.` of this hand-roller, is another roller, having its bearings on curved arms. This roller has a ratchet, in which a pawl works, having its bearingson a standard upon one of the curved, arms. A cord or chain, one end of which is attached to the roller, and the other end tothe lower round of the main ladder, passes over a base-plate with a grooved, curved arm, by means of which the ladders are raised at the desired angle.

To more fully illustrate and describe our invention, reference is had to the accompanying drawings and letters marked thereon, of which--l `Figure .1 is a side sectional elevation.

' Figure 2 is a plan.

Figure 3 is a side elevation with ladders extended. I I

A represents a carriage, having a flat bar', A', bent at both ends at right angles, and attached to the forward and rear truclis, with an upright rest, a, for the ladders. Upon the forward end of the carriage I place a 'turn-table,` B, constructed much in the usual way, and bolted to the axle. Y Upright pillow-blocks ff are placed at each side of the turn-table, and trunnions C C are attached to each side of the ladder. These trunnicns have their bearings in the pillow-blocks, and support the lower endet' the ladder C at any angle, from a,

horizontal to aperpendicular.A Backrcf -the'pillow-blocks are plaeed'upright standards D D, in which Aa hori-,`A

nontal hand-roller, E, works across the turn-table.` A cord r chain, F, is connected to this roller, passing 'through two slots, a a, and passes around a grcoved pulley, b, on the top` round of the main ladder, the two endscf the'eord being attached to a clip, G, which in turn is connected to the extension-ladder H. The ends ofthe clip extend'below the main ladder, and have a roller, b', which works against the rails et' the main ladder when the smallladder is extended or withdrawn. A clip, c, is also placed at the upper end ofthe main ladder, under `which the extension slides. By turning the hand-roller around, to which this cord or chain s connected; the ladder is -extended and withdrawn. Forlholding the ladder to the desired inclination when it is against the building, we employ another hand-roller, I, also attached to the upper part of the turn-table, lhaving its bearings in elevated arms del. At one end of the roller a collar is formed, Aand at the other a. -ratchet, K, in which is a. pawl, L, having its bearings in the post Z. In the centre of the roller I is madeaslot, by which one end of the rope or chain H is connected, extending over a base-plate, N, with a. curved and .grooved arm, n. The otherend of the rope is attached to the lower round of the main ladder, and by turning the roller the ladder iseasily raised to theV desired angle, where it'is kept in place by the pawl, which engages-the teeth on the ratchet of the roller, after which the extension may be thrown up by turn-ing the roller E. By this means fire-ladders may be easily raised to a great height, at any inclination, and changed by the turn-table to any point of a circle, without turning the truck or carriage. l

Having thus described our invention, what we claim, and desire to secure by Letters Patent, are

The combination and arrangement of the curved and'grooved arm n with hinged ladder c', winding-roller I, rope II', and platform B, substantially in the manner shownand described, for the purposes set forth.

l DANIEL HAYES, [n a] witnesses: t WILLIAM FREE, [La] C. W. M. SMITH,

Gao. H.' STRONG. 

